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A072535
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a(1) = 2, a(2) = 3 and a(n) = the smallest prime which is a linear combination of a(n-1) and a(n-2) of the form r*a(n-1) + s*a(n-2) with r,s >=1.
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0
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2, 3, 5, 11, 31, 53, 137, 349, 1109, 3203, 7639, 18481, 49037, 85999, 184073, 700067, 3056791, 6813649, 26554529, 81063721, 399718069, 1042627301, 4240371853, 10496135659, 77922909413, 187334225803, 983105631451, 2856447889481
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| a(3) = 11 and a(4) = 31 and the smallest prime of the form 11r + 31s is 53 for r = 2 and s = 1 hence a(5) = 53.
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CROSSREFS
| Sequence in context: A173631 A182987 A087580 * A073680 A079557 A090709
Adjacent sequences: A072532 A072533 A072534 * A072536 A072537 A072538
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 02 2002
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EXTENSIONS
| More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 12 2003
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